Problem with the leaves

Looks like heat stress with the taco leaf curl. You are there so no biggie! ✌️🏻💨🌿💨

It just looks like you are approaching harvest, pla ts eat themselves at that stage because it is easier than taking nutrients from the soil / liquids. Start to flush, perhaps?

Hello fellow grower, at the end of a cannabis plants life it stops uptaking nutrients towards the very end due to the end of its life cycle. I think the fade in these leaves are telling you that she is getting ready to be harvested. Have a peek at the trichomes with a 40 times microscope or a jeweler's loupe. If the trichomes are milky with a 10% amber she is ready to be harvested. If the trichomes are still clear I would give it a week or two. You want to be flushing your plants on the last week though if you haven't I would consider starting now. I hope this was helpful!